Weighing apparatus



Sept. 15, 1925. 1 1,553,651

F. c. c. VOGEL.

WEIGHING APFARATUS Filed July 31. 1.924

Patented Sept. 15, 1925.

stares; PATENT ortica.

EREDERIKCARLCHBHESTIAN; VOGEL, OF HAMBURG, GERMANY, ASSIGNOR TO. THE FIRM VOGEL 8 HALKE, QF HAMBURG, GERMANY.

wiiienrive nPrARATUsf.

Application ilgedJuly 31, 1924.. S.eria1'\`o729,377.,

Zo allwltom tniag/ fio/.noem Y Beit known that LEREDERIK Cani. CHRIS- TIAN Voert,l a. German citizen of the free and. Hanseatic townot' lilanil'iurg,V residing at Hamburg, Germany, have invented certain new andluse'lul: Linprovements 'in` Weighing Apparatusgaofl which theiollowing isa specification v The present invention relates to improvementsin weigliingnapparatus, and; more particularly. in, weighing apparatushaving an indicat(ir-mechanism,v which, is set. in operation A110i directlyby the action of the weight orload,A but-,by a., special driving gear on or nespectiwely after,` the release ot the latter, in, order to, avoid .excessive stresses on the indicatorfinechanism.V by` theV Lotion of the load from which stressesiotten. result in a material wear and tearo, thel said mechav 11isii1.even atten. a short .period of use and reonseqnent1y `canse inaccurate w'eigllillgS-I It hasaflready been, proposedfor the said kind. offy weighing apparatus to limitthe motion oit the indicator or pointer actuated by a spring or weight by means ot a, curved stop, piece, the position. of the curved stop piece' `befnsfcontrolled. directly by the foot plate or platform@ oftheweighing apparatus on loading the, latter.v4 ln. contradistinction to such-` constriiction;l a.. weighing apparatus according tothe., present` invention possesses the advantage. of beinggmuclrsimpler in. constructioniand rendering itv possible ,to Larrange the; diall or` scale, pla-te iny front of a which the pointer, ismovinggin a `horizontal or inclined position.. rlhis.arrangeinent provides amoreA convenient reading of the indicator theperson standing on the platform, and atithe sainetimeavsmaller height of they whole weighing apparatus.

lith the aboveend in. view my invention consists in certain novelfeaturesof construction andl combinations. of" parts. as will be in the Claims.

ingysheetyof drawings in, Vvwhich I have shown as an eXample\y altopractical embodiment, of

the subjpctJnat-terof invention, viz, a self!v rature.. To. the ceiiter 4 9 hereinafter fully, describedP and r pointed. out Referringtotheaccompanyn `the draw rod.

Similar numerals oireterence refer to like partsl throughout the iigures.k

The draw rod 2, actuated by the platform ot the weighing apparatus, (not shown in the drawing), is contained in a hollow column lA and` connected: with its top end to a cross piece 3, to each tree end of which is attached a strong helical spring, 21 the other ends of` these springs being tixedto the casingot the upper part ofthe weighing appapart of the cross piece o opposite the draw rod 2 is pivotally connected' a rod 5 slidable in ay cap-like socket 6. A cylindricalspring 7, surroundingthe said socket and beinglixed` with` one end to the rod 5 and with thefotlier end to the socket 6, l is tending to drawtheflatter upon and over the rod4 5 towards` the, cross piece 3 until thehupper bottoino'f` the said socket strikes against the' upper end` tacev ot the rod 5.

The upper end of the. socket, 6 is articulated to, a: lever plate 9 adapted tol swing in a, vertical plane on the bolt S mounted in the casing` 4., To the lever plate 9 Vis hingedA means Vof a bolt 13 ak rack l2 which is in. `engagement with a pinion 10 oi.2 the pointer, shaft ll. The arrangement andV function ot these parts beingthus: That when the socket (iis moved down the rack l2 will be displaced' and the pointer 14 turned accordingly, ther rack bar l2 being under the yielding action of a suitable springl.. v Y

On a stationary base plate 41 otthe casing 4f isinounted in transverse direction to the lever plate 9,v a slide-.bolt 16 suitably guided by a pin and slot device 161 162 shown in F'gzl.y A spring 17. tends to draw the said `slide-bolt. towardsthe lever plate 9.. When the lever plate-.is in .the position of rest, that` is. to say when thepointer is in its. Zeroposition, the slideboltengages an aperture 18` ot' the lever plate (Fig. 2). whereby the latter locked. On a pivot'l9 on the saidbase plate supporting the slide-bolt 16,

there` isrotat-ablymounted a lever. 20. The

tree end ofthe levery 2O projects through.` a slot. i? of Vthe casing i-and this end is in the form of' a hook 21 serving as a handle.. A helical spring 22 has the tendency to pull :lever() againsttlie lstop 23. Above the lever f 2O there is mounted a bell crank lever 2111 242 also rotatable on the pivot 19. The arm 2stl ot the bell crank lever engages a Vpin tired to the slide-bolt 16, while the other arm 2i12 carries a wall 26 of a pocket 26, 27. The opposite wall 27 of this pocket is attached to the lever 2O above or in front of a coin slot in the latter. A helical spring 28 tends to keep the arm 242 oit the said bell crank lever against stop pin 29 provided on the lever 20. In this position of the bell crank lever its arm 241 rests against the pin 25, while its pocket-wall 26 forms with the opposite pocket-wall 27 a suitable pocket 'tor the reception of a coin or token to be put in and through the ordinary slot ot the casing of the weighing apparatus. The coin or its equivalent put into the said pocket formed 'by the two pocket-walls transmits to the bell crank lever 241, 242 any swinging motion ot the lever 2O imparted to it by pulling or pressingA down the handle 21.

At the side of the slide-bolt 16 is arranged a locking lever 8O rotatably mounted on a pivot 31. This locking lever rests against the end of the lever plate 9 directed towards the pointer shatt 11, and is provided with a notch 32 which engages a shoulder 33 of the slide-bolt 16, when this latter is disengaged from the aperture 18 ot the lever plate 9 and is turned so 'tar as not to bar the motion ot the locking lever 30. The motion oi the locking lever 39 is effected by means ot. a spring 311 connected to the other end of the said lever 30.

The functioning or operation ot the weighing apparatus is as follows: On putting a coin into the slot of the apparatus, this coin is taken up in the pocket formed by the two pocket walls 26 and 27. Then `then the person to be weighed has placed himself on the platform ot the weighing apparatus the springs 21 take up the load by means ot' the draw rod 2 and are drawn ont more or less by the weight of the load. As the lever plate 9 is locked by the slidebolt 16, the socket 6 can not follow the downward motion of the draw rod 2; hence it follows that the rod 5 is pulled out of the said socket against the yielding tension oli the spring 7. The heavy pressure of the load is thereby prevented from acting upon the lever plate 9 and the other parts of the in dieator mechanism.

lVhen thereupon the person standing on the platform pulls down the lever 2O by means of hook 21 a swinging motion is also imparted to the bell crank lever 241, 242 by means of the coin 35 put into the apparatus. rl`he bell crank leve-r by its swinging motion pulls the slide-bolt 16 out of the aperture 18 et the lever plate 9. The lever plate 9 is now .treed and will be rocked by the spring 7 until the socket 6 strikes against the top end of .the rod 5 and is stopped thereby in its rocking motion. By this rocking motion the rack 12 has been displaced, whereby the pointer 14- is turned in front of the dial 36 into the proper position according to the downward motion' of the draw rod 2 or the weight of the person on the platform respectively. During the rocking of the lever plate 9 the locking lever 30 is disengaged in such a manner that its notch 32 can catch the shoulder 33 olf the slide-bolt 16 and secure the latter in the retracted position. It new Athe person on the platform releases the lever 20, this lever and the bell crank lever will be returned by the springs 22 and 28 respectively` into their positions of rest and the coin 35 be allowed to slide down through the slot 37 into a collecting vessel.

Vvlhen after the weighing operation the person leaves the platform the lever plate 9 directly influenced by the draw rod 2 is pressing at the finish of its return motion the locking lever 30 aside, so that this lever vsets 'free the slide-bolt 16. rlhe latter is thereby allowed to engage again the aperture 1S ot the lever plate 9. The indicator mechanism is now locked anew and prevented trom the direct action of a subsequent load to be weighed.

lVhen the weighing apparatus is to be made available without the use of a coin o1' the like, the bell crank lever 2/11, 2212 may be dispensed with and the lever 20 provided with a lined arm adapted to engage the pin 25.

I claim: 1. feighing apparatus comprising, a

pointer, a releasably locked indicator mechanism having a roekable lever plate adapted to transmit .its motion to the pointer, a slidebolt to lock the plate in zero position ot the pointer, a draw-rod influenced from the platform of the weighing apparatus, and a spring connected to the rod and plate, so that on the apparatus being loaded, and the plate unlocked, the spring rocks the plate until it rests on the rod.

2. lVeighing apparatus as in claim 1, having a locking lever to retain the slide-bolt 'for the lever plate in unlocked position, said locking lever being disengaged by the roeking motion of the plate, so that the bolt again locks the plate.

Veighing apparatus as in claim 1, having a hand operated lever, and a bell crank lever, the hand operated lever unlocking the lever plate by means of a token coupling the hand and bell crank levers, the latter operating the slide-bolt to unlocking position.

1. `Weighing apparatus comprising, a pointer, a releasably locked indicator mechanism having a rockable lever plate adapted to transmit its motionk to the pointer, a slidebolt to lock theplate in zero position of the pointer, a draw-rod influenced from the platiii) forni of the Weighing apparatus, and a spring connected to the rod and plate, so that on the apparatus being loaded, and the plate unlocked, the Spring rocks the plate until it rests on the rod, 2L locking lever to retain the Slide-bolt for the lever plate in unlooled position, said locking lever being disengaged by the rocking motion 0f the plate, so that the bolt again looks the plate, a hand operated lever, and a bell crank lever, the hand operated lever unlocking the lever` plate by ineens of e token coupling the hand and bell crank levers, the latter operating the slide-bolt to unlocking position.

FREDERIK CARL CHRISTIAN VOGEL. 

